ZBZ-4.0(2.5)/1140(660、380)Z Comprehensive protection device for explosion-proof coal drill used in mine
Suitable for dangerous environment of methane and coal dust explosion and power supply system with frequency 50Hz, rated voltage 1140V, 660V, 380V ungrounded three-phase neutral point, transform of power supply of 1140V, 660V, 380V to 127V, work as
remote starting and stopping control, short circuit and leakage protection of 1.2kW hand-held coal electric drill.